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Finding the Fourth Proportional to 546,429.60, 821,199.60 and 478,000.80

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Solution

The fourth proportional to 546,429.60, 821,199.60 and 478,000.80 is: 718,361.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,429.60 : 821,199.60 = 478,000.80 : x
  2. Step 2: Convert to fraction form
    546,429.60/821,199.60 = 478,000.80/x
  3. Step 3: Cross multiply
    546,429.60x = 821,199.60 × 478,000.80
  4. Step 4: Simplify right side
    546,429.60x = 392,534,065,759.68
  5. Step 5: Solve for x
    x = 392,534,065,759.68/546,429.60
  6. Step 6: Final answer
    x = 718,361.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.